GB-SAR导轨倾角引起的影像坐标投影变换误差分析

doi:10.13474/j.cnki.11-2246.2017.0248

测绘通报 ›› 2017, Vol. 0 ›› Issue (8): 25-30.doi: 10.13474/j.cnki.11-2246.2017.0248

GB-SAR导轨倾角引起的影像坐标投影变换误差分析

王鹏¹, 邢诚^2,3, 徐亚明^2,3

1. 苏州科技大学环境科学与工程学院, 江苏苏州 215009;
2. 精密工程与工业测量国家测绘地理信息局重点实验室, 湖北武汉 430079;
3. 武汉大学测绘学院, 湖北武汉 430079

收稿日期:2016-12-08 修回日期:2017-03-07 出版日期:2017-08-25 发布日期:2017-08-29
作者简介:王鹏(1986-),男,博士,讲师,研究方向为精密工程测量、地基InSAR地表变形监测技术。E-mail:geomaticpeter@vip.qq.com
基金资助:
住房和城乡建设部科技计划项目（2016-K4-089）；精密工程与工业测量国家测绘地理信息局重点实验室开放基金（PF2015-4；PF2015-1）；苏州科技大学人才引进科研资助项目（331511202）

Error Analysis of Image Coordinate Projection Transformation Caused by Rail Inclination of GB-SAR

WANG Peng¹, XING Cheng^2,3, XU Yaming^2,3

1. School of Environmental Science and Engineering, Suzhou University of Science and Technology, Suzhou 215009, China;
2. Laboratory of Precision Engineering and Industrial Surveying of National Administration of Surveying, Mapping and Geoinformation, Wuhan 430079, China;
3. School of Geodesy and Geomatics, Wuhan University, Wuhan 430079, China

Received:2016-12-08 Revised:2017-03-07 Online:2017-08-25 Published:2017-08-29

摘要/Abstract

摘要： 依据GB-SAR传感器运行导轨与成像投影面的空间关系，分别推导了导轨中心线俯仰角和横轴侧倾角所引起的成像投影误差的计算公式。计算结果表明，导轨安装定位时产生的俯仰角通常可以忽略不计，而成像投影误差对导轨横轴的侧倾角更为敏感。在GB-SAR连续变形监测应用中，导轨的横向姿态需做严格控制，确保其水平度。

关键词: 地基合成孔径雷达, 干涉测量, 导轨姿态倾角, 坐标变换

Abstract: Both pitch angle of rail centerline and roll angle of rail horizontal axis could lead to projection error in GB-SAR imaging process. In this paper, calculation formula of imaging projection error has been deducted, considering the spatial relationship between the sensor running rail and the imaging projection plane of GB-SAR. Calculation and analysis results show that the pitch angle generated when positioning GB-SAR running rail is usually negligible, meanwhile, the imaging projection error is more sensitive to the roll angle of this running rail. In continuous deformation monitoring applications of GB-SAR techniques, the lateral posture of sensor running rail need to be strictly controlled, ensuring its levelness.

Key words: ground-based SAR, interferometry, rail posture inclination, coordinate transformation

中图分类号:

王鹏, 邢诚, 徐亚明. GB-SAR导轨倾角引起的影像坐标投影变换误差分析[J]. 测绘通报, 2017, 0(8): 25-30.

WANG Peng, XING Cheng, XU Yaming. Error Analysis of Image Coordinate Projection Transformation Caused by Rail Inclination of GB-SAR[J]. 测绘通报, 2017, 0(8): 25-30.

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GB-SAR导轨倾角引起的影像坐标投影变换误差分析

Error Analysis of Image Coordinate Projection Transformation Caused by Rail Inclination of GB-SAR

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